The storyline was great from the beginning especially with fourth prince . Its just that it took so many detours and so many unimportant scenes just to make iu fit into the story. Omg this is the worse k drama i ever watched . I wasted so much time to watch this . The plot for the brothers are ok but with su ? Omg i cant even put into words how i felt about her character. First of her character was acting way too innocently, like too much of being a cutesy to the point that its so irritating. Second, she was actually causing the brothers to fight . So useless. She acts like a martyr omg . Wth .The final episode , omg they had to make the ending “tragic” but they could have thought of a better way to end it or perhaps the whole developer of the story. In the end the Brothers fought still because of her in the end . Is she the only woman in goryeo???? I would understand if she was . A love triangle is fine but what almost all the princes hahah too much . The story of the brothers was ok but they couldve executed it much better so many scenes that could have been scraped off including the king marrying haesu ??????? So many insignificant scenes to make it longer which i think 12 episodes would have ended the kdrama not 20 . Such a time waster . I am so disappointed. The only saving grace was wanting to know how each prince ended .